If you have experience building restful API's not hooking into them. Building them. Not using them. Then please apply to the position. The API is small so a micro framework like slim can be used. However, if you choose to go with a larger php framework it must be zend. If you do not have direct expertise in api creation you need not apply my architect will know right away. As well as, those who are chosen to interview are those who can cite work examples they have done in the past.